Family name Muniz Barreto (Muniz Barreto 
) , in all the world, is an extremely rare cognomen. The surname Muniz Barreto is habitual in Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Muniz Barreto | Brazil |
Flavio, Claudia, Deliete, Paulo Cesar, and Thiago Alberto